/* sterilefilm.omio.top — Thai corporate site styles */
:root{
  --primary:#0b5a8a;--primary-dark:#084568;--accent:#16a3b8;
  --dark:#10222e;--text:#33414c;--muted:#6b7a86;
  --bg:#ffffff;--bg-alt:#f4f8fa;--border:#e3eaf0;
  --radius:14px;--shadow:0 8px 30px rgba(16,34,46,.08);
  --container:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans Thai","Sarabun","Leelawadee UI",Tahoma,-apple-system,"Segoe UI",sans-serif;color:var(--text);background:var(--bg);line-height:1.7;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:.2s}
a:hover{color:var(--accent)}
h1,h2,h3,h4{color:var(--dark);line-height:1.35;font-weight:700}
.container{max-width:var(--container);margin:0 auto;padding:0 22px}

/* header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand img{height:49px;width:auto}
.main-nav{display:flex;gap:8px}
.main-nav a{padding:10px 18px;border-radius:8px;color:var(--dark);font-weight:600;font-size:15.5px}
.main-nav a:hover{background:var(--bg-alt);color:var(--primary)}
.main-nav a.active{color:var(--primary);background:#e8f3f8}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:10px}
.nav-toggle span{display:block;width:24px;height:3px;background:var(--dark);margin:5px 0;border-radius:2px;transition:.3s}

/* hero */
.hero{position:relative;min-height:640px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,45,66,.85) 0%,rgba(11,90,138,.55) 55%,rgba(11,90,138,.25) 100%)}
.hero-content{position:relative;color:#fff;padding:80px 22px;max-width:820px}
.hero-content h1{color:#fff;font-size:44px;font-weight:800;text-shadow:0 2px 14px rgba(0,0,0,.3)}
.hero-content p{margin:22px 0 34px;font-size:19px;color:#eaf4f9}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}

/* buttons */
.btn{display:inline-block;padding:12px 28px;border-radius:10px;font-weight:700;font-size:15.5px;border:2px solid transparent;cursor:pointer;transition:.25s;text-align:center}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.25);color:#fff}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-lg{padding:15px 36px;font-size:16.5px}
.center-btn{text-align:center;margin-top:38px}

/* sections */
.section{padding:84px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:760px;margin:0 auto 52px}
.eyebrow{display:inline-block;color:var(--accent);font-weight:700;letter-spacing:.06em;text-transform:uppercase;font-size:14px;margin-bottom:10px}
.section-head h2{font-size:34px;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:17px}

/* product grid */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(262px,1fr));gap:26px}
.product-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.3s;box-shadow:0 2px 10px rgba(16,34,46,.04)}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.product-card img{width:100%;aspect-ratio:3/2;object-fit:cover}
.pc-body{padding:20px 22px 24px}
.pc-body h3{font-size:18.5px;margin-bottom:8px}
.pc-body p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.text-link{font-weight:700;font-size:14.5px}

/* advantages */
.adv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:22px}
.adv-item{background:#fff;border-radius:var(--radius);padding:30px 26px;border:1px solid var(--border);transition:.3s}
.adv-item:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.adv-item h3{font-size:19px;margin-bottom:10px;color:var(--primary)}
.adv-item p{font-size:14.5px;color:var(--muted)}

/* applications */
.app-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.app-item{background:linear-gradient(120deg,var(--primary),var(--accent));color:#fff;padding:24px 22px;border-radius:12px;font-weight:700;text-align:center;font-size:16.5px;transition:.25s}
.app-item:hover{transform:scale(1.03)}

/* about split */
.about-split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-media video{width:100%;border-radius:var(--radius);box-shadow:var(--shadow);aspect-ratio:16/9;background:#000}
.about-text h2{font-size:30px;margin:10px 0 18px}
.about-text p{margin-bottom:14px}
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.gallery-grid img{border-radius:var(--radius);aspect-ratio:3/2;object-fit:cover;width:100%;box-shadow:0 3px 14px rgba(16,34,46,.07)}

/* timeline */
.timeline{max-width:760px;margin:0 auto}
.timeline-item{display:flex;gap:26px;padding:22px 0;border-bottom:1px dashed var(--border)}
.tl-date{min-width:170px;font-weight:800;color:var(--primary);font-size:17px}
.tl-body{color:var(--text)}
.report-list{max-width:820px;margin:0 auto;columns:2;column-gap:44px;padding-left:0;list-style:none}
.report-list li{padding:9px 0 9px 30px;position:relative;break-inside:avoid;border-bottom:1px solid var(--border);font-size:15px}
.report-list li::before{content:"✓";position:absolute;left:4px;color:var(--accent);font-weight:800}

/* page hero */
.page-hero{background:linear-gradient(115deg,var(--primary-dark),var(--primary) 60%,var(--accent));color:#fff;padding:74px 0}
.page-hero h1{color:#fff;font-size:38px}
.page-hero p{margin-top:10px;color:#d9ecf5;font-size:17px}

/* product detail */
.product-detail{display:grid;grid-template-columns:1.05fr 1fr;gap:54px;align-items:start}
.pd-media img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%}
.pd-info h1{font-size:32px;margin-bottom:18px}
.pd-lead{margin-bottom:26px;font-size:16.5px}
.check-list{list-style:none;margin:18px 0 34px;max-width:820px}
.check-list li{padding:10px 0 10px 34px;position:relative;border-bottom:1px solid var(--border)}
.check-list li::before{content:"✔";position:absolute;left:4px;color:var(--accent);font-weight:800}
.note-box{background:#eef7fa;border-left:4px solid var(--accent);border-radius:10px;padding:24px 28px;margin-top:34px;max-width:820px}
.note-box h3{margin-bottom:10px;font-size:18px}
.note-box p{font-size:15px}

/* faq */
.faq-wrap{max-width:860px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;margin-bottom:14px;overflow:hidden}
.faq-item summary{padding:20px 26px;font-weight:700;color:var(--dark);cursor:pointer;font-size:16.5px;list-style:none;position:relative}
.faq-item summary::after{content:"+";position:absolute;right:24px;font-size:22px;color:var(--accent);font-weight:700}
.faq-item[open] summary::after{content:"–"}
.faq-item[open]{box-shadow:var(--shadow)}
.faq-a{padding:0 26px 22px;color:var(--text)}
.cta-inline{margin-top:36px;text-align:center;background:var(--bg-alt);border-radius:var(--radius);padding:32px}
.cta-inline p{font-weight:700;color:var(--dark);margin-bottom:16px;font-size:17px}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:start}
.contact-info h2,.contact-form-wrap h2{font-size:26px;margin-bottom:20px}
.contact-info h3{font-size:17px;color:var(--primary);margin:22px 0 6px}
.contact-info img{margin-top:28px;border-radius:var(--radius)}
.contact-form{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:34px;box-shadow:0 3px 16px rgba(16,34,46,.05)}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-weight:700;font-size:14.5px;margin-bottom:7px;color:var(--dark)}
.form-row input,.form-row select,.form-row textarea{width:100%;padding:13px 15px;border:1.5px solid var(--border);border-radius:9px;font-size:15px;font-family:inherit;color:var(--text);background:#fcfeff;transition:.2s}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(11,90,138,.12)}
.form-success{background:#e8f7ee;border:1.5px solid #35b36a;border-radius:var(--radius);padding:38px;text-align:center}
.form-success h3{color:#1c7c44;font-size:22px;margin-bottom:10px}

/* cta band */
.cta{background:linear-gradient(115deg,var(--primary-dark),var(--primary) 55%,var(--accent));padding:72px 0}
.cta-inner{text-align:center;color:#fff;max-width:720px}
.cta-inner h2{color:#fff;font-size:32px;margin-bottom:14px}
.cta-inner p{color:#e2f1f8;margin-bottom:30px;font-size:17px}

/* footer */
.site-footer{background:var(--dark);color:#aebcc6;padding:64px 0 0;font-size:14.5px}
.site-footer h4{color:#fff;margin-bottom:16px;font-size:16px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.4fr;gap:40px;padding-bottom:44px}
.footer-grid img{margin-bottom:16px;background:#fff;padding:6px;border-radius:8px;width:150px;height:auto}
.footer-grid a{display:block;color:#aebcc6;padding:4px 0}
.footer-grid a:hover{color:#fff}
.site-footer .btn-outline{border-color:var(--accent);color:#fff;margin-top:14px}
.site-footer .btn-outline:hover{background:var(--accent);border-color:var(--accent)}
.copyright{border-top:1px solid rgba(255,255,255,.1);padding:22px;text-align:center;font-size:13.5px;color:#7d8f9b}

/* cat bar */
.cat-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:44px}
.cat-chip{background:#fff;border:1.5px solid var(--border);padding:9px 20px;border-radius:99px;font-weight:600;font-size:14.5px;color:var(--text)}
.cat-chip:hover{border-color:var(--primary);color:var(--primary);background:#e8f3f8}

/* responsive */
@media(max-width:960px){
  .hero-content h1{font-size:33px}
  .about-split,.contact-grid,.product-detail{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .report-list{columns:1}
  .section{padding:64px 0}
}
@media(max-width:640px){
  .nav-toggle{display:block}
  .main-nav{position:absolute;top:76px;left:0;right:0;background:#fff;flex-direction:column;padding:12px 18px 20px;border-bottom:1px solid var(--border);display:none;box-shadow:0 14px 26px rgba(16,34,46,.1)}
  body.nav-open .main-nav{display:flex}
  body.nav-open .nav-toggle span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  body.nav-open .nav-toggle span:nth-child(2){opacity:0}
  body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
  .hero{min-height:520px}
  .hero-content h1{font-size:27px}
  .hero-content p{font-size:16px}
  .section-head h2{font-size:26px}
  .page-hero h1{font-size:29px}
  .footer-grid{grid-template-columns:1fr}
  .contact-form{padding:24px 20px}
  .timeline-item{flex-direction:column;gap:6px}
}